Further torque (Fig.5) results in failure of the engagement of the implant driver to the implant well (arrowhead: the apical end of the osteotomy). There is a remote possibility that the newly formed buccal plate is fractured.
Fortunately the distal crest is at the same level of the implant plateau. With bone graft (*: autogenous bone + Osteogen), the implant threads may not be exposed. Because of the incomplete implant seating, a shorter abutment is used (A: 7.8x4 (4.5) mm).
Xin Wei, DDS, PhD, MS 1st edition 04/13/2015, last revision 04/13/2015